That's really cool! How'd you do this? I tried it with a Floppy and a static bag, only the static bag worked, and that was on the edges where it's pressed. :'( I don't know if it has to do with the fact that your laser is about 40 times the mW mine is or not. Really cool. I wonder what kind of effect you could get if you mounted some of a Floppy disk, or a static bag on a slow moving motor... Great videos!